Here's the rare Delta accessory which allows you to use router bits in the heavy duty shaper. This is installed into the spindle cartridge using the same tie bar and nut that hold your regular spindles. As shown in the photos interchangeable 1/2" and 1/4" collets are included along with the instruction sheet (very brief) from Delta. The last photo shows the router spindle installed in a shaper with a 1/2 shank router bit.
Shaper and router bit not included. The item "Delta 43-824 Router Bit Adapter for Heavy Duty Shaper 1/2 and 1/4 Bit Shanks" is in sale since Monday, February 11, 2019. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Woodworking Tools & Supplies\Other Woodworking". The seller is "hammerblossom" and is located in Clifton Park, New York. This item can be shipped to United States.